Subject: [mg28582] I want to rotate a series points around a spatial line

From: liwen liwen <gzgear at yahoo.com>

Date: Sat, 28 Apr 2001 21:36:07 -0400 (EDT)

Sender: owner-wri-mathgroup at wolfram.com

Dear friends;
How are you!
I want to rotate a series points around a line, for
example,ptset={{0,0},{5,5},{2,5},{7,9}};
the line goes through {1,1,1} and {4,5,7}, I want to
rotate the ptset around the line for t angle,
what should I do?
Thank you very much!
Liwen
e-mail: gzgear at yahoo.com
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